Ductile Fe-based amorphous alloy

Hong Kyu Kim; Kwang Bok Lee; Jae Chul Lee

doi:10.1016/j.msea.2012.05.059

Ductile Fe-based amorphous alloy

Hong Kyu Kim, Kwang Bok Lee, Jae Chul Lee

GREEN SCHOOL (Graduate School of Energy and Environment)

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

Experiments demonstrated that the addition of a minute amount of V to Fe ₅₂Co _(20-x)B ₂₀Si ₄Nb ₄V _x amorphous alloy induces atomic-scale phase separation, which dramatically enhances the plasticity. Especially, Fe ₅₂Co _17.5B ₂₀Si ₄Nb ₄V _2.5 amorphous alloy exhibited a strength of 4.7GPa and a fracture strain of 8.0%, which is the largest strain reported for Fe-based amorphous alloys. In this study, the structural origin of the enhanced plasticity is explored by examining the role played by the phase separating element on the packing density and strain localization.

Original language	English
Pages (from-to)	399-403
Number of pages	5
Journal	Materials Science and Engineering A
Volume	552
DOIs	https://doi.org/10.1016/j.msea.2012.05.059
Publication status	Published - 2012 Aug 30

Keywords

Amorphous alloy
Phase separation
Plasticity
Strain localization
Structural disordering

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2012.05.059

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title = "Ductile Fe-based amorphous alloy",

abstract = "Experiments demonstrated that the addition of a minute amount of V to Fe 52Co (20-x)B 20Si 4Nb 4V x amorphous alloy induces atomic-scale phase separation, which dramatically enhances the plasticity. Especially, Fe 52Co 17.5B 20Si 4Nb 4V 2.5 amorphous alloy exhibited a strength of 4.7GPa and a fracture strain of 8.0%, which is the largest strain reported for Fe-based amorphous alloys. In this study, the structural origin of the enhanced plasticity is explored by examining the role played by the phase separating element on the packing density and strain localization.",

keywords = "Amorphous alloy, Phase separation, Plasticity, Strain localization, Structural disordering",

author = "Kim, {Hong Kyu} and Lee, {Kwang Bok} and Lee, {Jae Chul}",

note = "Funding Information: J.C. acknowledges the support of the National Research Foundation of Korea under Award of 2011-0000241.",

year = "2012",

month = aug,

day = "30",

doi = "10.1016/j.msea.2012.05.059",

language = "English",

volume = "552",

pages = "399--403",

journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",

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publisher = "Elsevier BV",

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TY - JOUR

T1 - Ductile Fe-based amorphous alloy

AU - Kim, Hong Kyu

AU - Lee, Kwang Bok

AU - Lee, Jae Chul

N1 - Funding Information: J.C. acknowledges the support of the National Research Foundation of Korea under Award of 2011-0000241.

PY - 2012/8/30

Y1 - 2012/8/30

N2 - Experiments demonstrated that the addition of a minute amount of V to Fe 52Co (20-x)B 20Si 4Nb 4V x amorphous alloy induces atomic-scale phase separation, which dramatically enhances the plasticity. Especially, Fe 52Co 17.5B 20Si 4Nb 4V 2.5 amorphous alloy exhibited a strength of 4.7GPa and a fracture strain of 8.0%, which is the largest strain reported for Fe-based amorphous alloys. In this study, the structural origin of the enhanced plasticity is explored by examining the role played by the phase separating element on the packing density and strain localization.

AB - Experiments demonstrated that the addition of a minute amount of V to Fe 52Co (20-x)B 20Si 4Nb 4V x amorphous alloy induces atomic-scale phase separation, which dramatically enhances the plasticity. Especially, Fe 52Co 17.5B 20Si 4Nb 4V 2.5 amorphous alloy exhibited a strength of 4.7GPa and a fracture strain of 8.0%, which is the largest strain reported for Fe-based amorphous alloys. In this study, the structural origin of the enhanced plasticity is explored by examining the role played by the phase separating element on the packing density and strain localization.

KW - Amorphous alloy

KW - Phase separation

KW - Plasticity

KW - Strain localization

KW - Structural disordering

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